Modern Systems Programming with Scala Native

Working with Asynchronous TCP Sockets

Just as we did in Chapter 5, ​Writing a Server the Old-Fashioned Way​, we’re going to write a simple TCP echo server that accepts connections, reads strings from the connected socket, and writes back the same message in response. Although it’s about as simple as a network protocol gets, this scenario is enough for us to exercise all the essential API calls we need to make a libuv server work. And as you’ll see, there’s a close correspondence between these calls and those you learned when we created our blocking server.

Accepting Connections

To receive connections on a server, we have to initialize the socket, bind to a port, listen for incoming connections, and then accept each incoming connection before ...